If you have experienced the pin annotation being the same for the second and third part of an overload symbol, then the fault lies with a missing attribute in the actual symbol. Symbols affected are (but may not be limited to): VOL2, HOL2
How To
Select File dropdown and then Open
Browse to where you have installed the AutoCAD Electrical libraries e.g. C:\Program Files\Autodesk\AcadE 2008\Libs\IEC2
Locate the drawing VOL2 and Open
Using AutoCAD’s Copy command (Modify dropdown > Copy), copy the attribute FAMILY below itself as shown:
Double left click on the new copied attribute or type DDEDIT at the command line. Change the values as shown:
Save and close the drawing. Repeat for the HOL2 symbol.